>>> we begin with lance armstrong. he's speaking up this morning, ahead now of the big interview with oprah winfrey today. once one of the most revered athletes ever is now expected to admit to blood doping and the use of performance-enhancing drugs. abc's neal karlinsky has followed this story from day one. so, neal, what exactly is neal saying? what are we expecting to hear today? >> reporter: we expect a confession. sources close to armstrong say we can expect to see his human side. they say that he'll speak openly, honestly, and directly with oprah, but likely only offer a limited confession. we know for instance, he has a standing offer on the table with the u.s. anti-doping agency that could reduce his lifetime ban to just about eight years or less even now, if he comes clean and names names. so far, he's not taken them up on that offer. >> so, neal, from the perspective of armstrong's camp, lot of questions about, what is to be gained and lost here? >> reporter: the stakes are huge for armstrong. there are at le